Have you tested your forages yet? As our growing season nears completion, & producers get ready for fall, the quality of the forages in livestock's diet declines. Here is a great resources from Iowa State University Extension on the value in testing your feedstuffs.
And as you start your preparations for 2011, make sure to include SO4 in your plans! Having a high quality, soluble source of calcium & sulfur can often improve the quality & quantity of your feed.